CVE-2026-34373CWE-346

Parse Server: GraphQL API endpoint ignores CORS origin restriction

Medium · published March 31, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
14.7
In the wild
Unconfirmed
What it is

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.66 and 9.7.0-alpha.10, the GraphQL API endpoint does not respect the allowOrigin server option and unconditionally allows cross-origin requests from any website. This bypasses origin restrictions that operators configure to control which websites can interact with the Parse Server API. The REST API correctly enforces the configured allowOrigin restriction. This issue has been patched in versions 8.6.66 and 9.7.0-alpha.10.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
EPSS
0.00244 · 14.7th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-03-31T14:38Z
EPSS history
Timeline
  • 31 MAR 14:38Z
    Parse Server: GraphQL API endpoint ignores CORS origin restriction
    cvelistv5